user defined implicit casts

[Jarrett Billingsley]

"Ender KaShae" <astrothayne at gmail.ckom> wrote in message 
news:f8m0k6$2oo9$1 at digitalmars.com...
>
> c++ has member, global, and static operator overloads it is up to the 
> programmer to choose how to implement it, I think it would be nice if D 
> had a similar mechanizm.

Can you come up with something more solid than "this is how C++ does it?" 
Can you explain what functionality global and static operator overloads 
provide that member operator overloads cannot?